DAO 33:119-122 (1998)  -  doi:10.3354/dao033119

The pathogenicity of Vibrio alginolyticus on Haliotis rufescens veliger larvae and 4 d old postlarvae was tested in small-scale static bioassays with different bacterial concentrations (10² to 10⁶ cells ml^-1). Larval and postlarval survival were evaluated at 24 and 48 h. Results suggest that V. alginolyticus can cause massive mortality in larvae of H. rufescens within 24 h at concentrations above 10⁵ cell ml^-1, while a concentration of 10⁶ cell ml^-1 is required to produce the same effect in abalone postlarvae. The potential application of these results to hatchery conditions is discussed.

Abalone · Pathology · Vibrio alginolyticus